It will not be possible to find any data going back to the period of Lake Dwellers. However, a variety of informative documents do exist which may help to complete your research.
Registers of civil status and archives, genealogical databases, dictionaries and references are interesting sources for researchers. Numerous information is available in the internet showing weblinks on genealogical, historical and demographical databases. Responsible Public Record Offices may know what is available.
Databases may facilitate the process of genealogical research substantially. However, they cannot replace the research itself. Mistakes in databases are not unusual. A control of the found data in the original records is absolutely mandatory for family researchers.